/Engine/Plugins/EnhancedInput/Source/EnhancedInput/Public/InputMappingContext.h
Unmap all key maps to an action within the mapping context.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Mapping") void UnmapAllKeysFromAction ( const [UInputAction](API\Plugins\EnhancedInput\UInputAction) * Action )